Run T-0118 rejected

· Evidence: SPRT Sequential probability ratio test. Games are played until the accumulated evidence reaches one of two bounds; then the test stops.

Hypothesis

A collected principal variation is output via UCI Universal Chess Interface, the text protocol between a chess engine and the program that runs it. for each completed iteration.

Wording edited for publication from the German entry; the register carries the author’s own text.

Stages

Elo against the predecessorElo intervals: short stage −0.65 ± 4.96.−50+5short stage−0.65 ± 4.96short stage · rejected−0.65 ± 4.96 Elo · 5,866 games
Point estimate with the reported 95-percent half-width, per stage. The dashed line is zero. Estimates from a stopped sequential test are biased by the stopping rule; the interval is nominal.
Field short stage
Verdictrejected
Elo Strength difference to the opponent, estimated from the games, with a 95-percent half-width where the oracle reported one. Never an absolute rating.−0.65 ± 4.96
nElo Normalised Elo: the Elo difference divided by the spread of the game results, so that the SPRT bounds mean the same at different time controls.−1.17 ± 8.89
Games5,866
Wins / draws / losses1,558 / 2,739 / 1,569
pentanomial Games are played in pairs with swapped colours; the five counts are the pairs scoring 0, ½, 1, 1½ and 2 points.89 / 582 / 1582 / 611 / 69
LLR Log-likelihood ratio, the running evidence of an SPRT. It starts at 0; a stage passes at the upper bound and fails at the lower one.−3.00
Bounds−2.94 … +2.94
SPRT Sequential probability ratio test. Games are played until the accumulated evidence reaches one of two bounds; then the test stops.[0.0, 10.0]
Error rates α / β0.05 / 0.05
Modelnormalized
time control Base time plus increment per move in seconds, e.g. 8+0.08: eight seconds per game plus 0.08 seconds per move.8+0.08
BookA
Opponentvs predecessor
Duration44 min

Provenance

Date
2026-09-23
Started
2026-09-23 04:14:37 UTC
Duration
44 min
Author
Agent X
Epoch
5
Gatekeeper
passed
Bench nodes
3,627